Free Write / AssociationHealth Day A / B

NutritionWhat did you write down?Where there any ideas / thoughts repeated?What do you think was the most important?

Nutrition“you are what you eat”What do you think this means?Definition – the science of how your body

uses food

CalorieWhat is a calorie?Energy – The ability to do workThe amount of energy in foods is measured in

caloriesDefinition – The energy needed to raise the

temperature of 1 kilogram of water through 1 °C, equal to one thousand small calories and often used to measure the energy value of foods.

MetabolismAutomobiles burn gasoline to get the energy

they need to move. Your body burns (metabolizes) food to produce energy in the form of heat. This heat warms your body and (as energy) powers every move you make.

Resting Energy Expenditure (basal metabolism) - The energy your resting body needs to maintain life

This accounts for 60 to 70 percent of all th energy you need each day

NutrientsDefinition – Chemical substances your body

uses to build, maintain, and repair tissuesAdditionally they empower cells to send

messages back and forth to conduct essential chemical reactions including breathing, movement, and all five senses

Nutrient TypesMacro – Protein, fat, carbohydrates, and

waterMicro – Vitamins and mineralsWhich do you think you need more of?Daily recommended amount for macro is

slightly above 2 ounces for men and slightly less then 2 ounces for women

Daily recommended amount for micro is much smaller and is typically measured in milia and micrograms

Essential NutrientsA nutrient that cannot be manufactured by

the body A lack of an essential nutrient can be

connected with certain health issuesEssential Nutrients can be grouped into the

following categoriesVitamins, Minerals, Amino Acids, Fatty Acids

Where Does Your Weight Come From?About 60 percent of your weight is waterAbout 20 percent of your weight is fatAbout 20 percent of your weight is

combination of mostly protein, plus carbohydrates, minerals, and vitamins

Example 140lb man – 84 lbs of water, 28 lbs of body fat, 28 lbs of a combination of protein, (25lbs) (7lbs minerals)(1.4 lbs of carbohydrates) (trace of vitamins)

Nutritional StatusPhrase to describe the state of your healthMalnourished – a diet that dies not provide

enough food A diet with a deficiency of a particular

nutrientA metabolic disorder or medical condition

that prevents the body from absorbing needed nutrients

Ways To Check Nutritional StatusReview medical historyPhysical examinationBlood / Urine tests

Digestive SystemCollection of organs specifically designed to

turn complex substances (food) into basic components (nutrients) during the two part process known as digestion.

Two Part ProcessMechanical Digestion – Takes place in you

mouth and stomach. Your stomach performs a churning action (peristalsis) to break down the food.

Chemical Digestion – Occurs at every point of the digestive track where enzymes and other substances such as hydrochloric acid (stomach glands) and bile (liver), dissolve food, releasing the nutrients from the food

What Makes You Hungry?What are signs or causes for you to want to

ingest food?

What Makes You Hungry?Body signalsBrainSightScent

Rejection Reaction – The body is trying to defend itself from ingesting the food

http://www.youtube.com/watch?v=2fH-ljgkxRk

MouthAllows you to ingest food without chokingBreaks down barriers on certain foods (fruits,

vegetables, and grains) so that the nutrients can be absorbed by the body

Saliva is produced which moistens the food allowing it to easily travel into the esophagus

Saliva also contains the amylases, an enzyme that starts the digestion of carbohydrates (startches)

StomachStomach churns to break food down into

small piecesProduces stomach juices – potent blend of

enzymes, hydrochloric acid, and mucusDigestion of proteins and fats begin in the

stomach converting them into their basic components of amino acids and fatty acids

Eventually your stomach breaks down the food into a thick soupy substance called chyme

http://www.youtube.com/watch?v=-U5JyODRVng

Small IntestineHow long do you think you SI is?Pancreatic and intestinal enzymes break

down protein into amino acidsBile (made in the liver stored in the

gallbladder) enables fats to mix with waterAlkaline pancreatic juices make the chyme

less acidic which allows amylases to continue to break down carbohydrates into simple sugars

Small IntestineLined with villi and on the villi there are

microvilli which absorb a particular nutrientNutrients are not absorbed in order but

according to how fast the body can break them down

Carbohydrates – broken down into sugarsProtein – broken down into amino acidsFats – broken down into fatty acidsHow do you feel after you eat a meal high in

fat vs a meal high in protein and carbohydrates

Nutrients AbsorbedAmino acids, sugars, vitamin C / B, iron,

calcium, and magnesium are carried through the bloodstream to your live

Fatty acids, cholesterol, and vitamins A / D / E / K go onto the lymphatic system and then into the blood

Large Intestine Top of your large intestine is your colonColon – primary job is to absorb water from

left over mixture and compact the remaining substance into feces